From eab314f5909dba208d4cb7dc5aac6ee707d5d171 Mon Sep 17 00:00:00 2001 From: Jacob Chen Date: Mon, 14 Mar 2016 11:20:14 +0800 Subject: [PATCH] dm: video: Add a operation to display uclass The current display class only allow to get timing from edid. So add a operation to get timing directly from driver. In driver, I will use fdtdec_decode_display_timing to get timing. Signed-off-by: Jacob Chen Acked-by: Simon Glass --- drivers/video/display-uclass.c | 3 +++ include/display.h | 11 ++++++++++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/video/display-uclass.c b/drivers/video/display-uclass.c index 31522eac65..e4763de73d 100644 --- a/drivers/video/display-uclass.c +++ b/drivers/video/display-uclass.c @@ -36,6 +36,9 @@ int display_read_timing(struct udevice *dev, struct display_timing *timing) u8 buf[EDID_EXT_SIZE]; int ret; + if (ops && ops->read_timing) + return ops->read_timing(dev, timing); + if (!ops || !ops->read_edid) return -ENOSYS; ret = ops->read_edid(dev, buf, sizeof(buf)); diff --git a/include/display.h b/include/display.h index c180e76e53..b1c476628b 100644 --- a/include/display.h +++ b/include/display.h @@ -23,7 +23,7 @@ struct display_plat { }; /** - * display_read_timing() - Read timing information from EDID + * display_read_timing() - Read timing information * * @dev: Device to read from * @return 0 if OK, -ve on error @@ -42,6 +42,15 @@ int display_enable(struct udevice *dev, int panel_bpp, const struct display_timing *timing); struct dm_display_ops { + /** + * read_timing() - Read information directly + * + * @dev: Device to read from + * @timing: Display timings + * @return 0 if OK, -ve on error + */ + int (*read_timing)(struct udevice *dev, struct display_timing *timing); + /** * read_edid() - Read information from EDID *